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What do you understand by the term sourc...

What do you understand by the term source and sink in plant physiology ?

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Source is defined as any organ in plants which are capable of exporting food materials to the areas of metabolism or to the areas of storage. Examples: Mature leaves and germinating seeds.

Sink is defined as any organ in plants which receives food from source. Example: Roots, tubers, developing fruits and immature leaves.
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